community_garden

elixir/community-garden/test/community_garden_test.exs

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+defmodule CommunityGardenTest do
+  use ExUnit.Case
+
+  @tag task_id: 1
+  test "start returns an alive pid" do
+    assert {:ok, pid} = CommunityGarden.start()
+    assert Process.alive?(pid)
+  end
+
+  @tag task_id: 2
+  test "when started, the registry is empty" do
+    assert {:ok, pid} = CommunityGarden.start()
+    assert [] == CommunityGarden.list_registrations(pid)
+  end
+
+  @tag task_id: 3
+  test "can register a new plot" do
+    assert {:ok, pid} = CommunityGarden.start()
+    assert %Plot{} = CommunityGarden.register(pid, "Johnny Appleseed")
+  end
+
+  @tag task_id: 3
+  test "maintains a registry of plots" do
+    assert {:ok, pid} = CommunityGarden.start()
+    assert %Plot{} = plot = CommunityGarden.register(pid, "Johnny Appleseed")
+    assert [plot] == CommunityGarden.list_registrations(pid)
+  end
+
+  @tag task_id: 3
+  test "the first plot has an id of 1" do
+    assert {:ok, pid} = CommunityGarden.start()
+    plot = CommunityGarden.register(pid, "Johnny Appleseed")
+    assert plot.plot_id == 1
+  end
+
+  @tag task_id: 3
+  test "registered plots have incremental unique id" do
+    assert {:ok, pid} = CommunityGarden.start()
+    plot_1 = CommunityGarden.register(pid, "Johnny Appleseed")
+    plot_2 = CommunityGarden.register(pid, "Frederick Law Olmsted")
+    plot_3 = CommunityGarden.register(pid, "Lancelot (Capability) Brown")
+
+    assert plot_1.plot_id == 1
+    assert plot_2.plot_id == 2
+    assert plot_3.plot_id == 3
+  end
+
+  @tag task_id: 3
+  test "registered plots have incremental unique id when registered concurrently" do
+    {:ok, pid} = CommunityGarden.start()
+
+    total_plots = 20
+    test_process_pid = self()
+
+    Enum.each(1..total_plots, fn n ->
+      spawn(fn ->
+        plot = CommunityGarden.register(pid, "Mary Bumblebee #{n}")
+        send(test_process_pid, {n, plot})
+      end)
+    end)
+
+    plot_ids =
+      Enum.map(1..total_plots, fn n ->
+        receive do
+          {^n, plot} -> plot.plot_id
+        after
+          100 -> nil
+        end
+      end)
+
+    assert Enum.sort(plot_ids) == Enum.to_list(1..total_plots)
+  end
+
+  @tag task_id: 4
+  test "can release a plot" do
+    assert {:ok, pid} = CommunityGarden.start()
+    assert %Plot{} = plot = CommunityGarden.register(pid, "Johnny Appleseed")
+    assert :ok = CommunityGarden.release(pid, plot.plot_id)
+    assert [] == CommunityGarden.list_registrations(pid)
+  end
+
+  @tag task_id: 4
+  test "do not re-use id of released plots" do
+    assert {:ok, pid} = CommunityGarden.start()
+
+    plot_1 = CommunityGarden.register(pid, "Keanu Reeves")
+    plot_2 = CommunityGarden.register(pid, "Thomas A. Anderson")
+
+    assert plot_1.plot_id == 1
+    assert plot_2.plot_id == 2
+
+    CommunityGarden.release(pid, plot_1.plot_id)
+    CommunityGarden.release(pid, plot_2.plot_id)
+
+    plot_3 = CommunityGarden.register(pid, "John Doe")
+    plot_4 = CommunityGarden.register(pid, "Jane Doe")
+
+    assert plot_3.plot_id == 3
+    assert plot_4.plot_id == 4
+  end
+
+  @tag task_id: 4
+  test "release only one plot at time" do
+    assert {:ok, pid} = CommunityGarden.start()
+
+    plot_1 = CommunityGarden.register(pid, "Keanu Reeves")
+    plot_2 = CommunityGarden.register(pid, "Thomas A. Anderson")
+
+    assert plot_1.plot_id == 1
+    assert plot_2.plot_id == 2
+
+    CommunityGarden.release(pid, plot_1.plot_id)
+
+    assert [^plot_2] = CommunityGarden.list_registrations(pid)
+  end
+
+  @tag task_id: 5
+  test "can get registration of a registered plot" do
+    assert {:ok, pid} = CommunityGarden.start()
+    assert %Plot{} = plot = CommunityGarden.register(pid, "Johnny Appleseed")
+    assert %Plot{} = registered_plot = CommunityGarden.get_registration(pid, plot.plot_id)
+    assert registered_plot.plot_id == plot.plot_id
+    assert registered_plot.registered_to == "Johnny Appleseed"
+  end
+
+  @tag task_id: 5
+  test "return not_found when attempt to get registration of an unregistered plot" do
+    assert {:ok, pid} = CommunityGarden.start()
+    assert {:not_found, "plot is unregistered"} = CommunityGarden.get_registration(pid, 1)
+  end
+end

elixir/community-garden/test/test_helper.exs

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+ExUnit.start()
+ExUnit.configure(exclude: :pending, trace: true, seed: 0)